OPA890IDBVT

Current - Input Bias:	100nA
Base Part Number:	OPA890
Supplier Device Package:	SOT-23-6
Package / Case:	SOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	3 V ~ 12 V, ±1.5 V ~ 6 V
Current - Output / Channel:	40mA
Current - Supply:	1.1mA
Voltage - Input Offset:	1mV
Series:	--
-3db Bandwidth:	260MHz
Gain Bandwidth Product:	130MHz
Slew Rate:	500 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Voltage Feedback
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to OPA890IDBVT

OPA890IDBVT is a precision low-power operational amplifier from Texas Instruments. It is designed for applications in fields such as instrumentation and high-resolution signal processing. It is characterized by very low power consumption, low offset voltage and input bias current, wide bandwidth and fast settling time. The OPA890IDBVT is part of the OPAx00 family of quad op-amps.

OPA890IDBVT Application Field and Working Principle

The OPA890IDBVT is mainly used in low-power instrumentation, medical imaging and test and measurement equipment. It can also be used in audio processing applications as an active summing/level shifting/isolator/driver stage. The OPA890IDBVT has low power consumption of 1 mW at a supply voltage of 4V and an input common mode range that extends below the negative rail by user-selected jumper.OPA890IDBVT operates as a difference amplifier, which has two inputs, labeled As and Bs and one output. An input signal is applied to a pair of inputs, often referred to as the "noninverting" and "inverting" inputs. When a voltage is applied to the noninverting input and the inverting input is grounded, the output will be equal to the input voltage times the gain of the amplifier. When the two inputs are different, then the output will be the difference between the two inputs times the gain. The gain of the OPA890IDBVT is set by two external components, R1 and R2, and can be calculated using the following equation: Gain = 1 + (R2 / R1). The OPA890IDBVT has a maximum gain of 40V/V, but the actual gain is usually much lower, usually around 10-20V/V.The OPA890IDBVT has a wide bandwidth of over 1MHz at a gain of 20V/V and a low power consumption of 1mW for a 5V supply. It also has a low input bias current of 20 nA maximum. This low input bias current reduces the need for offset compensation.Finally, the OPA890IDBVT features an improved PSRR (power supply rejection ratio) compared to other op-amps, providing better immunity to power supply noise.

Conclusion

The OPA890IDBVT op-amp is a precision low-power amplifier with low offset voltage and input bias current, wide bandwidth and fast settling time. It is ideal for use in low-power instrumentation, medical imaging and test and measurement equipment. It also has improved PSRR compared to other op-amps, providing better immunity to power supply noise. With its low power consumption and large bandwidth, the OPA890IDBVT is a great choice for audio processing applications.

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